预制装配式分体柱框架抗震性能研究

已有研究表明分体柱具有较好的延性，能运用于地震多发的房屋结构中。为方便施工，提出预制装配式分体柱框架结构的设想，通过有限元数值模拟，对整体柱框架结构和分体柱框架结构的抗震性能进行对比分析。结果表明：地震作用下装配式分体柱框架结构加速度响应较现浇整体柱框架更易趋于稳定；与整体柱框架相比，装配式分体柱框架位移响应较大；装配式分体柱框架结构的基底剪力均小于整体柱框架结构的；现浇整体柱框架结构的混凝土节点损伤区域与分体柱框架结构相比较大，证明钢套筒对框架结构节点起到保护作用；装配式分体柱框架结构更适用于硬质场地。整体表明装配式分体柱框架结构的延性更强、耗能性能更好，且更加稳定。

Study on Seismic Performance of the Prefabricated Split Column Frames

Previous studies have shown that split columns, which are characterized with good ductility, can be used in earthquake-prone building structures. In order to facilitate construction, the idea of prefabricated split column frame structure has thus been proposed, followed by a comparison and an analysis of the seismic performance of the intergal column frame structure and the split column frame structure based on a finite element numerical simulation. The results indicate that the acceleration response of the prefabricated split column frame structure is easier to be stabilized than that of the cast-in-situ integral column frame under seismic action. Compared with integral column frames, there is a larger displacement response for prefabricated split column frames, with the base shear force of the prefabricated split column frame structure smaller than that of the intergal column frame structure. The damage area of concrete joints in cast-in-situ integral column frame structures is larger than that in split column frame structures, indicating a protective role to be played by steel sleeves in the joints of frame structures. The prefabricated split column frame structure is more suitable for hard fields. Overall the prefabricated split column frame structure is characterized with a stronger ductility, a better energy consumption performance and a higher stability.